Jeff McDonald
Microsoft Defender security research lead and principal research manager focused on large-scale machine learning models and pipelines protecting endpoints, leading research into AI side-channel risks.
Best podcasts with Jeff McDonald
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Dec 17, 2025 • 48min
Whisper Leak: How Threat Actors Can See What You Talk to AI About
Jeff McDonald, a Microsoft security research lead specializing in ML model protections, and Jonathan Barr Orr, a hacker and vulnerability researcher, discuss Whisper Leak. They explain how token-by-token streaming and packet size/timing patterns can reveal topics in encrypted AI traffic. The conversation covers which models show signals, real-world adversaries, and developer mitigation approaches.
